# Math is Easy vs PFD Calc

The clearest difference is ads: Math is Easy at none against PFD Calc's shown. Math is Easy also leads on iOS requirement (7.0 vs 15.0). On price, update cadence, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Math is Easy ships an update every 2 months, PFD Calc every 5 weeks. The most recent releases landed on October 9, 2026 and October 5, 2026 respectively.

## The numbers

| Metric | Math is Easy | PFD Calc |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.5 (2 ratings)](https://appshunter.io/ios/app/math-is-easy-prime/id488574860/reviews)** | — |
| Number of ratings | **2** | — |
| Positive reviews | 90.9% of reviews | — |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | Every 2 months | **Every 5 weeks** |
| Monetization | Free | — |
| Size | 6 MB | 14 MB |
| Requires iOS | **7.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Xiaodong Zhu](https://appshunter.io/developer/414505553) | [Kazuhisa Kobayashi](https://appshunter.io/developer/1580882000) |

## What reviewers say

### Math is Easy

[App page](https://appshunter.io/ios/app/math-is-easy-prime/id488574860)

This app helps users understand prime factorization with a fast, real-time solver. It also calculates the Greatest Common Factor and Least Common Multiple, and can generate random numbers for various uses.

**Highlights:** Prime factorization solver, Greatest Common Factor (GCF) calculation, Least Common Multiple (LCM) calculation, Random number generator, Real-time results as you type

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


### PFD Calc

[App page](https://appshunter.io/ios/app/pfd-calc-prime-factorization/id6737405828)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Math is Easy free?

Math is Easy is free to download, with no in-app purchases.

### Is PFD Calc free?

PFD Calc is free to download, with no in-app purchases.

### Do Math is Easy or PFD Calc have ads?

PFD Calc shows ads; Math is Easy does not.

### Which is updated more often, Math is Easy or PFD Calc?

Math is Easy ships an update every 2 months, and PFD Calc every 5 weeks. Most recently, Math is Easy was updated on October 9, 2026 and PFD Calc on October 5, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*